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(No Model.) 2 Sheets-Sheet 1. E. C. CONDIT.

"HEATING FURNAGB.

No. 334,644. Patented Jan. 19, 1886.

INVENTORJ .0 wie TNESSE WM ATTORNEY,

(No Model.) 2 sheets-smeet 2. E. C. GONDIT.

.HEATING FURNAGB. No. 334,644. Patented Jan. 19, 1886.

WITNBSSES INVENTOR,

ATTORNEY f N, PETERS, Fhawuuwgupnwr. washangmn n. c.

@Miren STATES EZEKIEL O. GONDIT, OF KANSAS CITY, MISSOURI.

HEATING-FURNACE.,

SPECIFICATIONIorming part of Letters Patent No. 334,644, dated January 19,1886.

.Application lcd January 31. 1885.

To @ZZ whom it may concern,.-

Beit known that I, YEZEKIEL C. Connu, of Kansas City, Jackson county, Missouri, have invented a new and Improved Ventilating- Heater, of which the following is a full, clear, and exact description.

My invention relates toheating apparatus that may be located directly within the room to be warmed and ventilated; and it consists in the arrangement and combination of the various parts, as hereinafter described, and particularly pointed out in the claims.

The objects sought to be accomplished are increased economy in the consumption of fuel, simultaneous control of improved Ventilating devices, and general utility throughout the entire apparatus.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in each figure.

Figure l is a section through the apparatus upon the vertical linezz, Fig. 2; Fig. 2, a front elevation of the same; Fig. 3, a section upon horizontal line w w, Fig. 1; Fig.4, a section upon line y y, same figure; Fig. 5, a section on line as x, Fig. l; Fig. 6, a section upon line t t, Fig. l; Fig. 7, a section upon line r1, same iigure; and Fig. 8 is a perspective View of my improved fire-door.

In the construction of heaters or hot-air furnaces thc draft-passages in most instances heretofore have been arranged to conduct the products of combustion in comparatively parallel lines toward the smoke-1iue. This construction may allow the outgoing products sufficient velocity to prevent a great deposit of soot in the passages, which is commendable, being one of the strong points of my improved construction; but as such passages direct the heated products only in parallel lines toward the smoke-flue there is no force in operation to prevent a large proper-tion of radiable heat escaping with them.

In the improved furnace or heater shown in the drawings, by the peculiar arrangement of passages in the h eating-drum A, a whirling motion is imparted to the hot gases, and, by reason of centrifugal force generated during such movement, they vare made to impinge constantly upon the outer radiating -surface,

Serial No. 154,525. (No model.)

A', of such drum, Heat that would otherwise be lost is thus retained and caused to pass through the radiating-surface, the remaining products passing to the smoke-flue A2. l

The drum A consistsotA a series of spiral passages, P, preferably four in number, en'- circling an annular passage, g, forhot air, and a direct-draft passage, A3, the whole being located directly above the iirepot E. The upper extremity of each spiral passage l? terminates in a chamber, A5, common to all. The

lower end of the direct passage A3 is seated upon a neck, A4, located upon the upper portion ofthe fire-pot, and the lower extremity of each spiral passage P is placed in communication with the fire-pot by means of a neck or duct, c, formed integral therewith. AnY

base-plate inside the diameter of the casing B.

These latter openings are controlled by aregister plate or plates, L. The registerplate L and the fresh-air plate L are rigidly connected together bya suitable rod, N, or other means, and the handle N is common to both, the arrangement being such that when the roomopenings K are closed the freshair. openings LZ will be open. Thus any movement of one plate is accompanied by a like and simultaneous movement of theother.

Heretofore in this class of heating apparatus the fresh-air register has been located at some distance therefrom, and its operation was inconvenient and uncertain.. After the air enters the casing B, as before described, it cornes in contact with the radiating-surfaces, and, being heated thereby, it passes upward through the space a between the casing and the drum A, and also through the space g between the drum and the direct passage A3. Short tubes or passages D reach through the In practice chamber A5 from the upper head, H, of the drum and form an outlet for the passage g. A damper, S, is located ata suitable point in the direct or central passage, A3, and is provided with an operating-handle, S, extending conveniently to the exterior of the casing B. XVhen this damper is open, the products of combustion pass direct to the smoke-pipe A2; but When the damper S is closed they must traverse the spiral passages P. llhe ash-pan I), front grate, G, and ash-*box doors F may be operated in the usual manner.

Much inconvenience has heretofore been experienced in apparatuses of this class by reason of poorly-constructed tire-doors. For instance, hinges and other parts of the door were easily broken, and in replenishing the fire fuel would be scattered over the roomiioor. These objections, among others, are obviated by my improved door M, Which consists of a front plate, m4, having upon its Outer i'ace a longitudinal depression, f2, engaging the casing B at the lower side, f, of the dooropening, and hinges f, of ordinary constructon,i`or holding the parts in position, and having upon its inner face segmental side pieces, O, cast integral therewith, and conforming to the radius of a circle having for its center the door-hinges, a lug,f, projectiug upon the circumference of each side piece, and adapted for contact with the upper side of the door-opening. Vhen the door is thrown open, the front plate, M, is supported by the lugsfl in aposition at about right angles to the casing B, and the two side pieces, O, form a chute, through which fuel may be readily introduced.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. In combination with the nre-pot and the outer casing, a series of spiral passages connected to tire-pot and exitilue, an annular hot-air passage encircled by the said spiral passages, and a direct-draft passage encircled by the hotair passage, substantially as described.

2. The combination, in a hot-air furnace, of spiral passages, the annular hot-air passage, the direct-draft passage, a dampertherein, the repot having necks connecting with the several passages, and the outer casing provided With registers, substantially as described.

In testimony whereof I aiiix my signature in presence of two Witnesses.

EZEKIEL G. CONDIT.

Witnesses:

HENRY D. ASHLEY, F. A. DOGGETT. 

